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Kernel: Remove ContiguousVMObject, let AnonymousVMObject do the job

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We don't need an entirely separate VMObject subclass to influence the
location of the physical pages.

Instead, we simply allocate enough physically contiguous memory first,
and then pass it to the AnonymousVMObject constructor that takes a span
of physical pages.
This commit is contained in:
Andreas Kling 2021-07-25 18:37:11 +02:00
parent 9a701eafc4
commit 6a537ceef1
10 changed files with 18 additions and 89 deletions
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8
Kernel/VM/AnonymousVMObject.cpp
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@ -70,6 +70,14 @@ RefPtr<AnonymousVMObject> AnonymousVMObject::try_create_with_size(size_t size, A
return adopt_ref_if_nonnull(new (nothrow) AnonymousVMObject(size, commit));
}
RefPtr<AnonymousVMObject> AnonymousVMObject::try_create_physically_contiguous_with_size(size_t size)
{
auto contiguous_physical_pages = MM.allocate_contiguous_supervisor_physical_pages(size);
if (contiguous_physical_pages.is_empty())
return {};
return adopt_ref_if_nonnull(new (nothrow) AnonymousVMObject(contiguous_physical_pages.span()));
}
RefPtr<AnonymousVMObject> AnonymousVMObject::try_create_purgeable_with_size(size_t size, AllocationStrategy commit)
{
if (commit == AllocationStrategy::Reserve || commit == AllocationStrategy::AllocateNow) {